io.write('BingXinSiBianXin a=')
a=io.read()
io.write('h=')
h=io.read()

for i=1,a do 
	io.write('/') 
end
io.write('\n')


for i=1,h-2 do
        for i=1,i do 
		io.write(' ')
	end
	for j=1+i,a+i do
		if(j==1+i) then
			io.write('/')
		elseif(j==i+a) then
			io.write('/')
		else 
			io.write(' ')
		end
       	end
	io.write('\n')
end

for i=1,h-1 do 
	io.write(' ')
end

for i=1,a do 
	io.write('/') 
end
io.write('\n')

